After seven racy and passionate years of courtship and marriage, Heidi Raykeil's sex life suddenly tanked. The culprit: the most beautiful, precious, gentle little person she had ever seen-her newborn baby daughter. Where once she and her husband had stayed up until 3 A. M. bouncing each other off the walls, now they were up at 3 taking turns bouncing their daughter on their knees, desperate to get her back to bed.